@inproceedings{zong-etal-2026-l2dir,
    title = "{L}2{D}ir: Integrating $L\_2$-Norm and Directional Alignment for Unsupervised Contrastive Representation Learning in Multimodal Retrieval",
    author = "Zong, Tianyu  and
      Dai, Rui  and
      Yi, Hongzhu  and
      Wang, Yuanxiang  and
      Zhang, Zhenghao  and
      Guan, Zhenyu  and
      Yang, Yujia  and
      Shi, Bingkang  and
      Ding, Yueyang  and
      Chu, Xiangxiang  and
      Liu, Kaikui  and
      Xu, Jungang",
    editor = "Liakata, Maria  and
      Moreira, Viviane P.  and
      Zhang, Jiajun  and
      Jurgens, David",
    booktitle = "Proceedings of the 64th Annual Meeting of the {A}ssociation for {C}omputational {L}inguistics (Volume 1: Long Papers)",
    month = jul,
    year = "2026",
    address = "San Diego, California, United States",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/ingest-acl/2026.acl-long.1604/",
    pages = "34717--34740",
    ISBN = "979-8-89176-390-6"
}